MESON Chess Problem Database

Problem Display
PID: 240584 (B3R1K1/7P/8/2p5/2N3N1/1Ppk4/R1q5/3n2B1 w - - 0 1)

Cristoffanini, Guido

Shakhmaty i Shashki, 1932

B3R1K1/7P/8/2p5/2N3N1/1Ppk4/R1q5/3n2B1

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sce5#
      • 2.Sge5#
      • 2.Be4#
      • 2.Rd8#
    • 1...Qxb3
      • 2.Se5#
    • 1...Qc1
      • 2.Sce5#
      • 2.Sge5#
      • 2.Be4#
      • 2.Rd8#
    • 1...Qe2
      • 2.Rd8#
    • 1...Qg2
      • 2.Se5#
    • 1...Qh2
      • 2.Be4#
  • Tries
    • 1.Re3+?
      • 1...Kd4
        • 2.h8Q#
        • 2.h8B#
      • 1...Sxe3!
  • Keys
    • 1.h8Q!
      • threat
        • 2.Qh7#
      • 1...Qxb3
        • 2.Se5#
      • 1...Se3
        • 2.Rxe3#
      • 1...Qe2
        • 2.Rd8#
      • 1...Qf2
        • 2.Be4#
      • 1...Qg2
        • 2.Se5#
      • 1...Qh2
        • 2.Be4#
      • 1...Sf2
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);P_PINS(D),XP(C)::S(E)
    • Q(b);::R(H)
    • Q(b);P_PINS(E)::S(D)
    • Q(b);::B(G)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(d);P-FLIGHT::P=Q
      • Refutation
        • S(a);XR(H)
  • Actual
    • P(F);
    • Threat
      • QAB(F)
    • Vars
      • Q(b);P_PINS(D),XP(C)::S(E)
      • S(a);N_GUARD::R1(H),XS(a)
      • Q(b);::R(H)
      • Q(b);::B(G)
      • Q(b);P_PINS(E)::S(D)
      • S(a);N_GUARD::R1(H)
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